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Udemy
4 Easy2 Medium1 Hard7 total
| No. | Problem | Difficulty | Frequency |
|---|---|---|---|
| 36 | Valid Sudoku | Medium | |
| 26 | Remove Duplicates from Sorted Array | Easy | |
| 3477 | Fruits Into Baskets II | Easy | |
| 4 | Median of Two Sorted Arrays | Hard | |
| 20 | Valid Parentheses | Easy | |
| 21 | Merge Two Sorted Lists | Easy | |
| 271 | Encode and Decode Strings | Medium |